Xian He

Xian He is a Ph.D. candidate at Zhejiang University. He mainly works in the area of epistemology and ethics. He tries to understand belief, love, and emotion within a unified framework. When not doing philosophy, he spends most of his time reading novels, playing video games, and staying with his family. He is also the builder and maintainer of this website.

His interests in this period:

  • reasons for belief
  • reasons for emotion, and fitting emotion
  • epistemic blameworthiness
  • incommensurability and incomparability

Biography

2023-24    Visiting Ph.D. Student, University of Zurich

2021-         Ph.D. in Philosophy, Zhejiang University

2018-21     M.A. in Philosophy, Sun Yat-Sen University

2014-18     B.A. in Administration, Shandong Normal University

Email

echohe2409@gmail.com

CV
Publications

When is Evidence No Longer Prior?. Analytic Philosophy. 2025

Some pragmatists hold that there are both practical and epistemic reasons to believe. A crucial issue for this view is how epistemic and practical reasons should be weighed against each other to deliver all-things-considered verdicts regarding what one ought to believe. According to threshold models, when the strength of practical reasons for belief exceeds a certain threshold, practical reasons become prior to epistemic reasons. These models are affected by a threshold problem: they fail to specify the threshold at which practical reasons take priority. This prevents them from being sufficiently informative and well-motivated. This paper proposes a response to the threshold problem. I argue that in most situations there are higher-order practical reasons for conforming to epistemic reasons. These higher-order practical reasons in turn determine the threshold. This threshold view yields intuitive verdicts across various cases and provides a clear guide for determining when we should believe for practical rather than epistemic reasons. Moreover, the view can explain why exceeding the threshold triggers the priority of practical reasons over epistemic reasons, and why the threshold is context dependent.
 

Fitting Love and Uniqueness. Ethical Theory and Moral Practice. 2025

According to the Quality Account of love, only lovable properties of the beloved person, such as beauty, wisdom and kindness, can make love for that person fitting. The account has been criticized for leading to implausible conclusions. If this account is correct, it would seem fitting to replace one’s lover with someone who possesses the same or more lovable properties, or stop loving someone who has lost these properties. Moreover, it is unclear how the Quality Account can differentiate between the fittingness conditions of love and other similar attitudes which seem also fitting in virtue of the same properties. I propose a new response to these objections. I argue that these challenges can be met by appealing to a distinctive lovable property that all objects of love share: their uniqueness. Uniqueness, along with other lovable properties, determines how worthy of love a person is.
 

Epistemic Norm, Epistemic Competence, and Role Obligation. Studies in Philosophy of Science and Technology /科学技术哲学研究. 2025. in Chinese.

 

The Practical Threshold of Epistemic Reasons. Foreigh Philosophy / 外国哲学. Forthcoming. In Chinese

Talks
 

The Practical Threshold of Epistemic Reasons

• “Epistemology in China” Conference, Shanghai, China, 09/2023.

• 2023 Beijing International Graduate Conference in Analytic Philosophy, Beijing, China, 01/2023 

When it is OK to Believe Against the Evidence

• Normativity: Theoretical and Ethical Approaches HS23, Zurich, Switzerland, 04/2024.

• Workshop: Beyond Epistemic Normativity, Hangzhou, China, 11/2024.

Fitting Love, and Metaphysical Irreplaceability

• Salzburg Conference for Young Analytic Philosophy 2023, Salzburg, Austria, 09/2023

• 12th ZJU Contemporary Anglo-american Philosophy Workshop, Hangzhou, China, 03/2023

• 6th Beijing Analytical Philosophy Forum, Beijing, China, 11/2022

The Normativism of Belief and The Constitutive Error Argument (信念的规范主义与错误构成论证) 

• 5th “Philosophy & Science” Young Scholar Workshop, Chengdu, China, 04/2023

• 5th ZJU Contemporary Anglo-american Philosophy Workshop, Hangzhou, China, 03/2022

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